Center Line Markings
Solid Yellow Line
The solid yellow line indicates a no passing zone applying to traffic with the solid line to its immediate left. This can be used adjacent to a broken yellow line to indicate no passing in one direction.
A double solid yellow line indicates passing is prohibited in both directions of travel.
A single solid yellow line should only be used to define the median of a freeway or divided roadway, or the left edge of a one-way roadway.
Broken Yellow Lines
A broken yellow line defines the center of a two-lane, two-way roadway where passing is permitted.